Pump.



PATENT Ormea.

FREDERIC W'. BLANCHARD, OF HOLBROOK, MASSACHUSETTS.

PUMP.

SPECFICATION forming part of Letters Patent No. 656,834, dated August 28, 1900. Application finamente 13,1899. saranno. 736,761. (romano .To all whom t may concern:

Be it known that I, FREDERIC W. BLANCH` ARD, a citizen of the United States, residing at Holbrook, county of Norfolk, State of Massachusetts, have invented an Improvement in Pumps, of which the following description, in connection with the accompanying drawings, is a speciiication, like characters on the drawings representing like parts.

This invention relates to pumps, and while it is adapted for many different purposes it is of prime utility in connection With a windwheel or analogous member the actuatingpower of which is variable, and the construction is such that the load upon the pumppiston is automatically thrown off the same When the actuating'power of the Wind-wheel passes below a given speed.

ln the drawings, Figure 1-is a vertical ceutral sectional elevation of a pump constructed in accordance with my invention in asimple embodiment thereof and showing the reliefvalve closed. Fig. 2 is an enlarged detail of the relief-Valve and adjacent parts with the relief-valve open. Fig. 3 is a plan view of a governor. Fig. 4 is an elevation of the same.

In the drawings, B representsa pump-barrel located over the suction-pipe 12, the passage of water from said suction-pipe to the piston-chamber being controlled by the usual Hap-valve 13. A

The piston is denoted by P, and its rod R extends upward therefrom and passes through the usual stufling-box in the top of the pumpbarrel. The pump-barrel has near the top thereof the nozzle 111, connected by the nipple 15 with the casing 17. Said casing Aincloses the iiap-valve 18, controlling the admission of water from the pump to the standpipe or riser S, coupled to the casting or valve casing 17 in some convenient manner.

The foregoing description relates to a well` known form of lift-pump, and my improvements may be used in connection therewith and are intended to operate automatically in conjunction with a member whose actuating force varies, such as a wind-wheel.

I have not deemed it necessary to represent in the drawings the connection between the Wind-wheel and the pumpnod, for these maybe ofany suitable kind.

The rod R is represented as consisting of two sections 18 and 19, adjustably connected together by means of a suitable clamp, as 20.

My invention is of importance in connection with a wind-wheel the speed of which varies materially, due to changes inthe velocity of the wind operating the same, and the mechanism is of such a character that the pump-piston is relievedof excessive weight when the wind goes down, sohthat both of these parts can continue to operate, but withoutlifting the water from the suction-pipe into the stand-pipe. When, however, the movement of the wind-wheel again reaches the necessary speed, the parts will be returned to their normal positions,whereby the pump can again operate to supply the stand-pipe S.

The pump-barrel has openings25 and 26 therein, leading into the conduit 27, shown as formed in a castingintegral with the pump, although, of course, this construction is not essential. The opening 25 is shown located above the piston when the same is at the upper end of its stroke, while the opening 26 is illustrated as being below said piston when the same is at the lower end of its stroke, as shown by full and dotted lines, respectively, in Fig. 1. By this construction water can be pumped from the piston-chamber into the conduit 27 and can then pass into the pistonchamber, so as to be circulated through said parts without passing `by valve-chamber 17 and without entering the suction pipe 12 when a valve controlling said conduit is open. The conduit 27 is intersected at a convenient place intermediate the inlet and outlet openings 25 and 26, respectively, by the valve chamber 30, in which the piston-valve V is mounted for sliding movement transversely tothatof the piston. The relief-valve V has a substantially cylindrical body or valve proper, 31, connected to the shallow head or disk 32 by the reduced neck 83. The stem 35 of the relief-valve V extends through the pump-casting and is provided at proper1yseparated points with stops or collars 36 and 37, suitably held thereon and adapted to re ceive between them thearm 38 of the anglelever A, fulcrumed at its angle to the beaiu ing 39. The other arm 40 of said angle-lever is adapted to be operated alternately by the IOO stops 41 and 42 of the automatic valve-actuator 43, shown as a weighted rod the Weight of which is denoted by 44.

The pump-rod R at a suitable point in its height is provided with a lateral arm 45, the hub of which is suitably secured thereto and which has at its free end the relatively-large opening 46, through which the vertical actuating-rod 43 freely passes. The rod 43 is provided with a collar 47 ad j ustably held thereon by the set-screw 43 and disposed in the path of the normally-free en d of the operating-arm 45. The lower end of the actuating-rod 43 is tapped into the boss or projection 4S upon the upper side of the disk 49, connected to a lower disk 50 by the web 5l, said disks, with the connecting-web, forming part of a duplex resistance device or governor, (designated in a general wayby G.) The governor G is shown as mounted for vertical reciprocative movement in the cylinder 55, the base-piece 56 of which can be secured in proximity to the pump. The base-piece 56 has a passage 57 communicating with the bottom of the casing or cylinder and also with the pipe 58, the upper end of which is connected to the cylinder above the governor when the same is at the end of its advancing stroke, whereby an uninterrupted conduit is provided in communication with said cylinder at both sides of the governor. The web 5l, between the two disks 49 and 50, has a port 60, shown controlled by the gravity-valve 61, pivoted to said web, as at 62. (See Fig. 4.) The upper disk has a port 61X, While the lower one has a port 62X, and these ports are located, respectively, at opposite sides of the web 5l, as indicated in Figs. 3 and 4.

The cylinder 55 is adapted to contain a body of liquid of suitable kind adapted to sustain the governor in its upper position. (Shown in Fig. 1.) Referring to Fig. 1, it will be assumed that the pum p-rod is being operated at its normal speed by a power-applying member. (Not illustrated.) In this case the arm 45 upon the pump-rod by striking the stop or projection 47 upon the valve-rod 43 will maintain said rod in its elevated position, aided by the resisting fluid, which upholdsthe governor in the cylinder 55, such iiuid serving to prevent the immediate gravitation of said rod by the action of the weight 44. Vith the parts in the positionillustrated in Fig. l the arm 33 ofthe angle-lever A, by acting against the left-hand stop or collar 36, will hold the body or eective portion 3l of the relief-valve V in such position that it obstructs or closes the conduit 27 whereby the water lifted by the piston can pass into the stand-pipe S in the usual manner. When, however, the speed of the rod R is reduced, owing to a reduction of velocity of the wind operating the wheel, the arm 45 will gradually fall from under the stop 47, thereby permitting the rod 43 to be lowered by the action of the weight 44, and as the weight descends the stop or projection 42 upon the rod 43, by acting against the arin 40 of the angle-lever, will swing the arm 38 to what is herein shown as the right, as indicated in Fig. 2, so that the body or effective portion 3l of the relief-valve can uncover the conduit 27. When the relief-valve opens in this manner, the water will pass from the piston-chamber into the conduit 27 and from thence again into the piston-chamber, and will be thus circulated while the valve 3l is open, so that the piston supports a Very small body of water when the windwheel slows down and does not sustain the column of water in the stand-pipe, as is ordinarily the case. As the governor descends it will force the liquid below the same into the passage 57, and from thence into the pipe 58, after which it iiows into the top of the cylinder. During this motion of the governor the liquid will pass through the port 62X and act against the upper disk 49 and'also against the Valve 6l, so that the latter will be held closed, thereby to secure the proper amount of resistance to the descent of the same. Upon the ascent of the governor G the fluid can easily force open the valve 6l and freely pass below said governor. wind reaches the proper velocity the projection 4l will strike the angle-lever A to secure the closure of the relief-valve.

The passage 57 is intersected by a plugvalve of suitable kind, by which the iiow of the resistance iluid can be regulated to increase or decrease the resistance.

The apparatus hereinbefore described can be materially modified within the scope of the appended claims, and hence the invention is in no wise limited to the character or arrangement of the parts previously set forth.

Having fully described my invention, what I claim as new, and desire to secure byLetters Patent, is-

l. A pump-barrel having a piston, a governor, a conduit communicating with the barrel, a relief-valve controlling said conduit, mechanism actuated by the piston-rod to close said relief-valve at or before the beginning of each stroke, and means acting in opposition to said mechanism and controlled by said governor and serving to open said valve when the speed of the piston goes below the normal.

2. A pump-barrel havinga piston, a conduit communicating with the barrel, a relief-valve controlling said conduit,aweighted rod,means connected with the piston and acting against the weighted rod to elevate the same when the speed of the piston is at its normal,and means between the weighted rod and the relief-valve whereby said rod can actuate the valve.

3. A pump-barrel having a piston, a conduit communicating with the barrel, a relief-valve controlling said conduit, mechanism actuated by the piston-rod to close lsaid relief-valve when the speed of the piston is at its normal, valve-opening means acting in opposition to said mechanism and controlled by the piston,

On the ascent of the rod 43 when the rI oo IIO 656,8sa e and a governor coperative with the valveopening means and serving to retard the action thereof.

et. A pump-barrel having a piston, a conduit communicating with the barrel, a relief-valve controlling said conduit, an automatic actuator provided with means for moving the same normally in one direction, means connected with the piston-rod to operate said actuator to move it in the opposite direction and to hold it in its retracted position when the speed of the piston is at its normal, a governor serving to retard the operation of the actuator as it moves in a direction to open the valve, and connections between said actuator aud the valve.

5. Apump-barrelhavingapiston, aconduit communicating with the barrel, a relief-valve v controlling said conduit, an automatic actuator provided with means for moving the same normally in one direction, means connected with the piston-rod to operate said actuator to move it in the opposite direction and to hold it in its retracted position, a governor serving to retard the operation of the actuator as it moves in a direction to open the valve, a plurality of remotely-disposed projections upon the actuator, and means to be alternately engaged by said projections, serving to actuate the valve.

6. A pump-barrel having a piston, a conduit communicating with the barrel, a relief-valve controlling said conduit, a rod provided with a plurality of projections, means to move said rod in a direction to open the valve, a lever to alternately engage said projections, and serving to actuate the reliefvalve, means upon the piston-rod to lift said rod, and a governor to retard the descent of said rod.

7. A pu mp-barrel having a piston,a conduit in communication with the barrel, a piston relief-valve, a piston-rod provided with an arm having an opening, a weighted relief-valve actuator extending freely through said opening and having a projection disposed. in the path of said arm and governing means for said actuator.

8. Apump-barrel havingapiston,a conduit in communication with the barrel, a reliefvalve controlling said conduit, a piston-rod, an automatic valve-actuator controlled by the piston-rod, a fluid-containing cylinder and a governor in said cylinder connected with the actuator.

9. Apump-barrelhavingapiston,a conduit in communication with the barrel, a reliefvalve for said conduit, a piston-rod, projections on the stem of the relief-valve, a lever, one arm of which is disposed between said projections, an actuating-rod having projections adapted to receivel the other arm of said lever and controlled automatically by the piston-rod and governing means for said actuating-rod.

l0. A pump-barrel having a piston, aconduit communicating with the pump-barrel at points beyond the piston when the same is at the limits of its respective strokes, a reliefvalve in said conduit, automatic means for positively closing said relief-valve at or before the beginning of each stroke, and regulatable means'for opening said relief-valve at each stroke of the piston that is slower than the predetermined speed.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERIC W. BLANCHARD.

Witnesses:

HEATH SUTHERLAND, LOUISE RorHsTEIN. 

